Drilling machine



Dec. 29, 1931. J. HORSTE DRILLING MACHINE Filed June 1'7, 1929 3 Sheets-Sheet 1 Hllll II II IHII m D D n W H m N G G .IHHH nHL W G n INVENTOR ATTORNEYS Dec. 29, 1931. J. HORSTE DRILLING MACHINE Filed June 1'7, 1929 3 Sheets-Sheet 2 INVENTOR ATTORN EYS Deg. 29, 1931, J. HORSTE 1,338,625

' DRILLING MACHINE Filed June 1 1929 5 Sheets-Sheet 3 INVENTOR ATTORNEYS Patented Dec. 29, 1931 ,gumm {ST-Ares JOSEPH Hoasm, on DETROIT, MICHIGAN,

OIF DmROIT, MICIZ'EGAN, i i i v DRI 'LLING I i i Application filed. slime :17, l i This invention relates generally to drill ing machines such as those designed forformmg sockets, recesses or openlngs in metal objects,i and" consists of certain novel features (I of constructlon, combinations and arrange- V q the clutch mechanism;

Figure 5 is a sectional view through the plunger adjusting means;

Figure 6 is a fragmentary sectional view through one of the plungers and associated r gears.

Referring now to the drawings, 1 is a metal object constituting the work and 2 is the machine embodying my invention. In practice the metal object '1 may be any suitable design 7 or metal part, and a plurality of such ohso jects may be drilled simultaneously by my machine. v p

Referring to the machine illustrated in the accompanying drawings, 10 is a horizontal frame or table.,11 arelaterally spaced plungers mounted to reciprocate and rotate in brackets 12 on the table, and 13 are drills at the forward ends of the plungers for engagement with the work, 15 designates generally the work holding means, 16 are cam followers movable longitudinally of the lun ers 17 is a rotar shaft extendin P a: a Y i,

across and journaled in brackets 18 on the table adjacent to said followers 16, 19 are cams rigid with the shaftl'? engaging the followers 16 andadapted when said shaft is rotated to reciprocate said plungers 11 and drills, 20 is a train of gearing for rotating said cam shaft, 21 is a train of gearing for rotating said plungers 11, and 22 designates PATENT OFFICE-1 AssIGNon TO murmur Emmi cox- A comonmpmn or MICHIGAN 1 momma-r I 1929. Serial No. $71,619, 1;

generally a clutch control for said trains 20 I and 21 of gearing, Asshown, the drills 13am detachably con nected by suitable coupling members '23'an-d the present instance this is accomplished'b'y providing three, collars 26, 26" andf26f respectively on each plunger ll'between the follower 16 and spring 25. lreferablythe collars are sleeved loosely uponthe'plungers and have rearward extensions 27, 27' and?!" respectively. The followers '16" are sleeved upon and havea press fit with the extensiens 27; while the collars 26 and 26have sockets 28 and 28 that receive and are threadedly engaged by the extensions 27" and 27?" respectively. Thus,' with this construction the collars 26', 26' and 26* may be adjustedlongitudinally of the plungers 11 and may l'ield infsuch adjustedposition bysetscnews 29' and 29".

WVith this construction, the metal objects 1 to 'bedrilled 'are'provided with laterally spaced-openings 7 that receive pegs 30 projecting laterally from an upstanding, trans.- versely extending part of theTframe 01" table so that'suchiobjects will be in: proper position relativetothe drills13. Q Followers 32 sleeved on rods 33' pro ecting laterally from the part 3110f thetable hold the jects constituting: the work on the pegs .30. As shown, cams Bet rotatably moimted on cross rods 35 carried by the rods 33- are adapted to-be actuated by levers 36 to engage. the followers 32 and hold the same inoperative position against the work, while coil springs 37 sleeved .on the rods 33' between the part 31 and the followers are adapted when the cams '34 are released" to auto'matie cally return the follower-s32 to inoperative position. Preferably" the bushings "40]are' provided for guiding the drills 13-i'ntopro'per engagement with the work. As show-m,

these bushings are secured in suitable openings in the frame part 31 and have central bores 30' that receive and guide the drills 13.

With this construction the shaft 17 is provided at one end with a gear 41 that is adapted to be actuated by a worm 42 on a stud Shaft- 43 carried by suitable arms 44 and 45 respectively depending from the table. A gear 46 is rigid with the shaft 43 and is adapted to be driven by the train 20 of gears that lead toithe main driving shaft'47 from the motor (not shown). Likewise. the plungers 11 are rotated to cause the drills 13 to rotate to obtain the proper drilling action. To accomplish this I have provided a set of gears 50 that are splined upon the plungers 11 at the rear ends thereof between the bearings 12 and frame part 12, and are adapted to be rotated by the train 2-1 of gearing that is also operated by the motor shaft 4-7. Preferably, the motor shaft 47 is located between the trains 20 and 21 of gearing and carries a main driving gear 51'that constitutes a common actuating means for said trains 20 and 21. Moreover. the clutch mechanism 22 is associated with the shaft 47 and is adapted to control the operation thereof. As shown, the clutch proper 53 is of conventional form and is actuated by a longitudinally movable rod 54 under the control of an operating handle 55. Links 56 and 57 constitute an operative connection between the handle shaft 58 and the rod 54. 59 is a bearing forithe rod 54. Thus, the clutch on the shaft 47 serves as a common control for both trains 20 and 21 of gearing.

In order that the drills 13 and the work. such. as the objects 1, may be maintained cool while being-drilled. water is conveyed from a suitable source through pipes 60 and 61 to registering openings 62 and 63 respectively in the frame part 31 and bushings 40 to the drills 13 and may be collected in a suitable trough 64. 1

Thus, from the foregoing description, it will be apparent that a plurality of metal objects such as 1 may be drilled simultaneously and such objects and drills may be effectively cooled. In fact, the drills and the work are more eifectively cooled since the cooling fluid is conveyed through the drill bushings 40 to the point of contact with the work. Another important feature is the construction and arrangement of the collars 26, 26 and 26'on the plungers 11, enabling ad ustments to be made even while the machine is in operation to regulate the cutting operation of the respective drills.

While it is believed that from the foregolng description, the nature and advantage ofmy invention will be readily apparent, 1 des re to have it understood that I do not limit myself to what is herein shown and described and'that such changes may be re sorted to when desired as fall within the scope of what is claimed.

What I claim as my invention is:

In a machine of the class described, the combination with a drill, of actuating means therefor including a plunger mounted for longitudinal'and rotary movement, means for moving said plunger longitudinally including a rotary cam, relatively adjustable collars on said plunger, one of said collars being fixed upon the spindle and having a threaded extension, another of said collars having asocket receiving the threaded ex tension and having a threaded extension, and another of said collars having a socket receiving the last mentioned extension and having a smooth extension, a cam follower pressed upon the smooth extension whereby the follower is adjustable with respect to the spindle, and yieldable means associated with said collars for maintaining said follower in operative engagement with said cam.

In testimony whereof I aflix my signature.

JOSEPH HORSTE 

